Overlay of Brain Structures (IMAGE) University of Arizona Caption Tracings of two newly discovered fossilized brains are superimposed upon the original Fuxianhuia protensa sample from 2012. Credit Strausfeld et al. and Current Biology Usage Restrictions Visual may only be used in connection with reporting or posting of this news release. Image credit must be stated as indicated. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.